Concrete mold



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' G. M. DETTO CONCRETE MOLD v xiled March 31. 19.22 i sheets-sheet 1 Iiii June 26, 1923.

G. M. DBT-ro CONCRETE MOLD l Filed March s1. 1922v 2 SheetS-Shet 2 Registered lune 265, i923.

earner GENERAL M. DITTO, F JULEI, ILLINOIS.

Application led Marsch 31., 1922. Serial No. 548,328.

To all 'zo/Loin t may concer/z;

.Be it known that l, GENERAL M. Drrro, a citizen of the United tltates, residing at Joliet, in the county oil lVill and State of illinois, have invented certain new and usettul `improvements in Vloncrete Molds, oit which the following' is a specilication.

The mold of this invention is designed primarily tor the purpose of molding con crete slabs ot' a character at present used in the construction of l corn cribs or like structures in ivhich Ventilating slots or openings are provided.

l`he object of the present invention is to `soidesign and construct the mold that a plurality of such ventilating slots Will be formed Iin the slab by the provision of removable core pieces suitably .Fitted Within the body oi' the mold.

ln the molding operation7 it is customary to-impart to the mold, during or immediately after the pourin g operation, a sullicient degree of vibration toy cause the liquid concrete to settle evenly and uniloiijmly into the mold, and the core pieces are configured and mounted in such a manner as to conform t0 the requirements of this vibratory actionin such a manner as to avoid the formation of thin fins or ribs of concrete Within the joints beitween the cores and the body of the mold.

` Further objects and uses of the invention will appear trom a detailed description thereof, which consists in the features ot construction and combinations of parts hereina'lfter described and claimed.

ln the drawings:

Figure 1 is a top plan view of the mold;

Fig. 2 is a side elevation of the same;

Fig. 8 is an end elevation of the same;

Fig. 4f is a longitudinal. sectional View of the mold, taken on line 4-fl oilFig. 1;

Fig. :5 is a cross sectional view, taken on line of Fig. 4; and

Fig. 6 is a perspective view of one of the| completed blocks.

The mold comprises a body portion havino a floor 107 which in the particular' form i shown is depressed along one side 11 to mold the rib or tongue 12 in th@ completed sla-b7 shown in Fig1 6. The metal of the floor at the outer edge of the depressed portion is upturned to furnish a side Wall 13 terminating in an outwardly projecting upper edge flange 14. The edge flange furnishes a support for a longitudinally extending bar 15 which is provided with a pair of outwardly like structure `in its rounded lower edge with a dewel pin which extends vertically through' openings in the socket and in the `floor of the `from the mold` Whenithe mold is projecting hooked lingers 16 which hook over the edge olf the flange 14 and serve to suspend the bar .15 above the depressed floor 11 of the mold in position to mold the groove 17 in the completed slab. The Hoor on `the opposite side. which stands at a higher elevation, is upturned to furnish a side Wall 18 provided with a flange 19 which i is engaged `by hooked fingers 20 outstanding from a molding` bar 21 of Curved configuration `along its inner edge, which bar serves to mold the rounded edge 22 orn the completed slab.

The ends of `the mold are closed by means y; 0i gates 23 which .are `secured by hooks 24e at their lower edges to a pair of supporting blocks 25, one at each end of the mold,

which blocks also serre to support 'the ends i of thev floor. VThe gates at theirends are providedfwith inturned lifinges 26, each oil? which terminates in an angularly disposed" marginal flange Qqivhich affords a point ot engagement for a latch 28 hooked to a lin i 0 29 `on the proximate side lWall of the mold.

The 'door of the mold `is provided at recurrent `intervals with a plurality of transversely extending sockets 30, each of which is secured tothe floor of the mold by screws 31 or the likc7 a nd each socket on its upper edge is grooved or i channeled to receive the rounded loueredge of a Wedge lshaped core blocl-- 7" which diver-.frcs upwardly in unequal degree, being set in oblique relation to ther-plane ofthe door, which core blocks are configured to form the vontilatingslots or openings in the completed slab, whichy slots or openings extend in oblique relation through the slab, so as to shed the rain when the slabs are erected into a. corn crib lor Each core piece is `provided tisana closed and latched, after which the mold is ready to receive the fluid concrete or like plastic material. The mold is preferably supported upon'a vibrating table or other vibrating support, and the fluid material is .poured into the mold while the same is being sharply vibrated to cause the fluid material to run evenly and uniformly into all portions olt the mold. After the mold has been filled to the upper level of the sides and ends, it is allowed to stand Jfor a considerable period oit time until the concrete or like plastic material has become set and hardened to the requisite degree.

In removing` the completed slab, the end gates are unlatched, and the mold with the slab therein is then preferably overturned, which causes the cores and the molding bars l5 and 21 to drop away freely from the body ot' the mold, the core blocks standing with their broad edges downwardly. rlhereafter, upon litting the completed slab, the core pieces will tall out and the operation is complete. By providing rounded socket members to receive the rounded edges of the core blocks, any possibility of ingress of cement or other plastic material into the space between the core blocks and the sockets is avoided, since the vibration to which the mold is subjected will merely cause the core pieces to rock slightly within the sockets at'- orded, without thereby opening up 0r enlarging the joint or crack at the point o'l juncture between the core piece and its socket, so that ingress oit material at this point is prevented. The arrangement is one which can be readily assembled and disassembled tor use, and one which serves to produce slabs of sharp and per'tect contiguration at ay minimum ot trouble and expense, and Without the need tor careful manipulation.

Although the device has been described with pmirticularity7 as to detail, and although the arrangement shown is one which has proven highly eliicient in use, it is not the intention in the claims, unless otherwise indicated, to limit the invention to the precise details shown and described.

I claim:

l. A mold for plastic materials, comprising a body, a plurality of core pieces located within the body, and a socket member for each core piece secured to the body, each core piece being removably supported within its socket, substantially as described.

2. rmold for plastic materials, comprising a body, a plurality ot core pieces located within the body. and a socket member for each c ore piece secured to the body, each core piece being removably supported within its socket and configured to diverge outwardly away from the point of support, substantially as described.

3. A mold for plastic materials, comprising a body consisting of a. floor having side end walls, a socket member secured to the licor of the body and grooved along its upper edge, and a core removably supported within the groove o't the socket, substantially as described.

t. A. mold for plastic materials, consisting ot a body comprising a floor and side and end walls, a socket member secured to the floor ot the mold and provided along its upper edge with an arcuately formed channel, and a core piece provided with a rounded edge removably fitted within said channel, substantially as described.

5. A mold for plastic'materials, consisting` of a body comprising a floor and side and end walls, a socket member secured to the floor ot the mold and provided along its upper edge with an arcuately formed channel, and a core piece provided with a rounded edge removably fitted within said channel and configured to diverge upwardly Jtrom said rounded edge, substantially as described.

6. In a mold for plastic materials, comprising a floor provided with side and end walls, a `series of transversely arranged socket members secured to the licor and each provided on its upper edge with an arcuately formed groove or channel, a series ot wedge shaped core pieces having their lower edges rounded to tit removably within the arcuately formed grooves, and a dowel pin for each core piece and its associated member tor holding the core against accidental displacement, substantially as described.

7. In a mold tor plastic materials, tbe combination of a body comprising a floor provided with a depressed portion along one edge. said floor terminating in upstanding side walls, molding bars removably secured to each of the side walls. one ot said molding bars being suspended to overlie the depressed floor portion. gates for the opposite ends of the body,l a plurality of socket members secured i parallel relation to the floor of the body and in transverse relation to the side wallsf each socket member being arouately channeled along its upper edge, a, plurality of downwardly converging wedge shaped core pieces, each having its lower edge rounded to lit removably within the associated. socket. and a dowel pin 'tor each core piece and socket tor removably holding the core piece within the socket. substantially as described.

l GENERAL M. DITTO. 

